[srslte-users] ZMQ issues on single node - could not transmit RAR

[Kevin Heathley]

Hi team, wondering if anyone has had success using the ZMQ RF driver on a
single node? I'm using 20.04 and playing around in Google Cloud (GCP). Have
tried many machine types, including the compute-optimized C2 instances, (8
vCPU and 32 GB RAM), but no luck.

"make test" completes with 100%.

I once happened to get UE Attach to complete, so I guess there is some
timing thing causing the issue.

enb:
01:59:33.047420 [MAC ] [E] [ 2761] SCHED: Could not transmit RAR within the
window (RA TTI=2751, Window=10, Now=2765)
01:59:33.057500 [MAC ] [E] [ 2783] SCHED: Could not transmit RAR within the
window (RA TTI=2771, Window=10, Now=2787)
01:59:33.066047 [MAC ] [E] [ 2801] SCHED: Could not transmit RAR within the
window (RA TTI=2791, Window=10, Now=2805)
01:59:33.076372 [MAC ] [E] [ 2822] SCHED: Could not transmit RAR within the
window (RA TTI=2811, Window=10, Now=2826)

ue:
01:59:08.352363 [UE  ] [I] Built in Release mode using commit d94078d54 on
branch master.
01:59:32.292831 [STCK] [I] tti_tprof: {mean, max, min} = {0.00, 0, 0} msec
01:59:32.763897 [STCK] [I] tti_tprof: {mean, max, min} = {0.00, 0, 0} msec
01:59:33.047427 [MAC ] [E] [ 2764] RA response not received within the
response window
01:59:33.057317 [MAC ] [E] [ 2784] RA response not received within the
response window
01:59:33.066717 [MAC ] [E] [ 2804] RA response not received within the
response window
01:59:33.076205 [MAC ] [E] [ 2824] RA response not received within the
response window
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